PPSC Science Related MCQs With Answers

Q.1: What sub-class of neutron star is known for its extremely high magnetic field?

1. Magnetar
2. Quasar
3. Magneto
4. Magnetta

Q.2: A pulsar is a rapidly spinning neutron star which emits:

1. A blinding light when it aligns with the planets
2. Radio waves detectable from Earth
3. A gravitational pull which attracts high energy dust particles
4. Enough energy to power itself indefinitely

Q.3: In a typical H-R diagram, stars are graphed by these two characteristics:

1. Temperature and luminosity
2. Luminosity and distance
3. Distance and temperature
4. Size and distance

Q.4: You have discovered a new celestial body. It has a thick atmosphere and it produces powerful cosmic winds and, when observed, the clouds obscure the body. You have determined it is this type of star.

Q.5: When a star becomes a singularity and has zero volume and infinite density, it is called——–?

1. White dwarf
2. Blue giant
3. Wolf-Raynet star
4. Black hole

Q.6: PSR J0108-1431 is the closest known ——- to Earth?

1. Black hole
2. Red giant
3. Quasar
4. Pulsar

Q.7: Particle clouds from where stars are formed are known as——?

1. Stellar nurseries
2. Star clouds
3. Event horizons
4. Singularities

Q.8: This in-between phase of stellar nurseries and star formation in stellar evolution is when the gathered dust is still condensing to form a star.

Q.9: Antares is of the largest known ——?

1. Quasars Star
2. Pulsars Star
3. White Dwarfs Star
4. Red Super-giants Star

Q.10: The sun is made up of 99.9% of ——– and ——-?

1. Oxygen and Hydrogen
2. Hydrogen and Sulfur
3. Carbon and Silicon
4. Hydrogen and Helium